MAZUT
Refilling fuel tanks
The Chief Engineer is responsible for the successful bunkering and he or an experienced assistant engineer should be on standby during the bunkering operation.
Whenever possible, fuel from different sources should be stored separately to minimize the possibility of fuel mixture incompatibility.
It is essential that all valves and fittings be physically inspected before taking fuels and lubricants on board to ensure that there is no possibility of unintentional spillage of product either on deck or overboard.
Before bunkering, an accurate set of probes/gauges must be obtained for the vessel's and supplier's tanks. On completion of bunkering, a second set should be received so that the quantity of fuel supplied can be checked against the receipts, taking into account the specific gravity of the oil and the resulting temperature of the oil in the ship's tanks together with any changes in trim. In ports where a meter is used, the chief engineer must determine whether the type is temperature compensated or otherwise.
After bunkering is completed, you must ensure that the oil fuel lines are empty. When purging, care must be taken to ensure that the tanks are not pressurized. As oil in tanks cools and contracts, it is important that double bottom tanks that are not in use are kept full to avoid free surfaces in such tanks. An overflow of fuel oil poses a serious fire hazard and also carries very heavy fines for the vessel if the harbor is subsequently polluted.
flash point
The Department of Transportation has issued the following guidelines regarding the hot spot:
“The flash point of the oil shall be not less than 60°C (closed test) when determined by recognized standard types of flash point measuring devices. - This shall be verified against a hopper receipt.
With each delivery of oil taken on board a vessel, the supplier must issue a written guarantee, signed by a responsible officer working for him, for the nearest test hot spot and the type of instrument with which the test was performed. This data must be entered into the engine log book.
Oil Samples
The chief engineer is responsible for ensuring that a sample of every stock of heavy fuel, intermediate fuel and diesel fuel on board is taken. This sample, in addition to the sample supplied by the oil company, must be kept on board the vessel for three months after consumption of oil from that source. Any suitable container, thoroughly washed and labeled
can be removed from the vessel's bunkering line in the presence of the supplier
representative and confirmed bunker receipt If difficulties arise with any fuel oil, then the chief engineer should deliver clearly labeled samples to the company's designated chemist along with samples taken from the separator inlet and fuel line.
Applications for bunkers and bunker acceptance forms (Crewing company)
Bunker receipts must only be signed by the chief engineer and, where appropriate, the master. Requests for bins must be telexed to head office.
